TIMMKOO MP3 Player with Bluetooth, 4.0" Full Touchscreen Mp4 Mp3 Player with Speaker, Portable HiFi Sound Mp3 Music Player with Bluetooth, Voice Recorder, E-Book, Supports up to 512GB TF Card (Green) : User Manual : Page 19

Languages

Question: How many languages are available on the device?

Answer: There are currently Simplified Chinese, Traditional Chinese, and English.

Japanese / German / French / Portuguese / Spanish are under development.

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Display Screen

Question 1: What is the visible screen size for watching videos?

Answer: 4”

Question 2: Can I clearly see the icons on the screen under strong outdoor sunlight?

Answer: Yes. You can adjust the screen's backlight brightness in Setting--Display as needed.

Question 3: Does this device have Blue light filter?

Answer: Yes. It can protect your eyes greatly

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Memory

Question: Can the player add external SD / TF cards? What is the maximum capacity it

supports?

Answer: Yes. You can add an external TF card, which supports up to 128GB.

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Built-in Speaker

Question 1: Does the device have a built-in speaker?

Answer: Yes.

Question 2: Can I manually turn on / off the built-in speaker?

Answer: Yes. We will update the firmware soon.

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Compatibility for OS

Question 1: Is the player compatible with Mac Book?

Answer: Yes. It is compatible with Windows 98/2000 / Vista /, Win 7 / Win 10, MacOS, MacOS

Catalina, Chrome OS.